Why Am I Getting an Android ClassNotFoundException: Didn\'t Find Class?

Android ClassNotFoundException: Didn't Find Class on Path

The error "ClassNotFoundException: Didn't find class" indicates that the Android system is unable to locate the specified class, even though it is correctly listed in the manifest file.

One possible cause of this error is a mismatch between the Android support library versions used in the project and the library projects included within it. To resolve this issue, ensure that the project and all its dependencies have the same version of the Android support library.

Steps to Resolve the Issue:

1. Check the Android Support Library Versions: Verify that the project and all its dependent libraries are using the same version of the Android support library.
2. Update the Gradle Dependency: If the versions do not match, update the Gradle dependency in the build.gradle file to use the correct version of the support library.
3. Clean and Rebuild the Project: Clean the project by clicking on "Build" > "Clean Project". Then, rebuild the project by clicking on "Build" > "Rebuild Project".

Example:

If the project uses Android Studio 3.0, the gradle.build file should include the following dependency:

implementation 'com.android.support:appcompat-v7:28.0.0'

If the project uses Android Studio 2.3, the gradle.build file should include the following dependency:

compile 'com.android.support:appcompat-v7:23.1.0'

Once the project and its dependencies are using the same version of the Android support library, clean and rebuild the project. This should resolve the "ClassNotFoundException: Didn't find class" error.

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